我正在尝试创建具有多个图像文件的.tif文件。 请参考下面的代码，该代码没有任何异常或错误。 tif创建成功。将第一张图像成功写入tif文件，但未成功写入其他文件。

尝试使用writer.write（IIOMetadata streamMetadata，IIOImage图像，ImageWriteParam参数）和writer.writeInsert（int imageIndex，IIOImage图像，ImageWriteParam参数），但是两者都做相同的事情。

import javax.imageio.ImageIO;
import javax.imageio.ImageWriter;
import javax.imageio.IIOImage;
import javax.imageio.ImageWriteParam;
import javax.imageio.stream.ImageOutputStream;
import java.awt.image.BufferedImage;
import java.io.*;
import java.util.Iterator;

/**
 *
 *
 * This class is used to convert the multiple images in to single multi-pages tiff image file.
 *
 */
public class MultiPageTiffGenerator {

    private static String compressionType="JPEG";

    public static boolean generateMultiPageTiff(String dirName,String outputFileName) throws Exception{
        boolean generated=false;
        ImageOutputStream ios=null;
        ImageWriter writer=null;
        try {
            // verify the directory for the image files
            File dir = new File(dirName);
            if(null!=dir && !dir.isDirectory()){
                throw new FileNotFoundException("No directory exists with the given name"+dirName);
            }
            System.out.println("verify the directory for the image files");
            // verify the images files exist

            File[] files = dir.listFiles();
            if(null == files || files.length == 0){
                throw new FileNotFoundException("No image files to process");

            }else{
                // Create the output file on the disk
                File file = new File(dirName+outputFileName+".tif");
                ios = ImageIO.createImageOutputStream(file);
                // Get the appropriate Tiff Image Writer
                Iterator <ImageWriter> writers=ImageIO.getImageWritersByFormatName("jpg");
                if(null== writers || ! writers.hasnext()){
                    throw new Exception("Appropriate Tiff writer not found");
                }

                writer = ImageIO.getImageWritersByFormatName("jpg").next();
                System.out.println("Get the writer");
                writer.setOutput(ios);
                System.out.println("Set the compression parameters for Tiff image");
                // Set the compression parameters for Tiff image
                ImageWriteParam param = writer.getDefaultWriteParam();
                writer.prepareWriteSequence(null);

                // Loop through all image files and write them to output tiff image
                BufferedImage image ;
                for (int i = 0; i < files.length; i++) {
                    System.out.println(writer.canWriteSequence());
                    System.out.println("Inside Loop-->" + files[i].getName());
                    InputStream fis=null;
                    int dotIndex= files[i].getName().lastIndexOf('.');
                    dotIndex=dotIndex>0?dotIndex:files[i].getName().length();
                    String fileName = files[i].getName().substring(0,dotIndex);
                    if(!fileName.equalsIgnoreCase(outputFileName)){
                        try{

                            fis = new BufferedInputStream(new FileInputStream(files[i]));
                            image = ImageIO.read(fis);
                            IIOImage img = new IIOImage(image,null,null);


                            writer.writeToSequence(img,param);/*tried using writer.write(IIOMetadata streamMetadata,IIOImage image,ImageWriteParam param) and writer.writeInsert(int imageIndex,ImageWriteParam param) but both does the same thing*/

                            image.flush();
                        }
                        catch(Exception e){
                            e.printStackTrace();
                        }
                        finally{
                            if(null!=fis){
                                fis.close();
                            }
                        }
                    }

                }
                writer.endWriteSequence();
                ios.flush();
                generated=true;

            }

        }catch(FileNotFoundException ex){
            generated=false;
            ex.printStackTrace();
        }catch(IOException ex){
            generated=false;
            ex.printStackTrace();
        }catch(Exception ex){
            generated=false;
            ex.printStackTrace();
        }finally{
            if(null!=ios)
                ios.close();
            if(null!=writer)
                writer.dispose();
        }
        return generated;
    }

    public static void main(String[] a) {
        try {
            generateMultiPageTiff("C:\\Users\\user1\\Desktop\\PDFToWord\\Files\\","output");
        }
        catch(Exception e) {
            e.printStackTrace();
        }
    }

}